Relative Item Of Interest Explorer Interface

ABSTRACT

Devices are disclosed for providing a Graphical User Interface (GUI) for representing a reference item and a number of items of interest. In one embodiment, each item of interest is assigned to one of a number of concentric regions in a two-dimensional geographic space based on the location and one or more attributes of the item of interest. The concentric regions in the two-dimensional geographic space are centered at a location in the two-dimensional space that corresponds to the reference item. A GUI is generated includes concentric display regions that correspond to the concentric regions in the two-dimensional geographic space, where a select concentric display region provides an expanded view of the items of interest located within the corresponding region in the two-dimensional geographic space and the remaining concentric display region(s) provide collapsed view(s) of the items of interest in the corresponding region(s) of the two-dimensional geographic space.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation U.S. patent application Ser. No. 12/976,595, titled “Relative Item Of Interest Explorer Interface”, filed on Dec. 22, 2010, and claims the benefit of provisional patent application Ser. No. 61/289,107, filed Dec. 22, 2009, each of the disclosures of which are hereby incorporated herein by reference in its entirety.

FIELD OF THE DISCLOSURE

The present disclosure relates to a Graphical User Interface (GUI) and more specifically relates to a GUI for representing a reference item and a number of items of interest.

BACKGROUND

Many services provided to users give the users access to vast amounts of data. For instance, many location-based services provide information to users regarding Points of Interest (POIs) that are near the users' current locations. Other services provide information to users regarding other users or crowds of users near the users' current locations. The vast amount of data returned to the users by such services can be overwhelming. This problem is further compounded by the often limited screen space available on mobile devices on which the data can be displayed. Thus, there is a need for an intuitive interface that enables a user to understand, navigate, and utilize vast amounts of data.

SUMMARY

The present disclosure relates to device to generate a Graphical User Interface (GUI) for representing a reference item and a plurality of items of interest in two-dimensional geographic space. In one embodiment, each item of a plurality of items of interest is assigned to one of a plurality of concentric regions in a two-dimensional geographic space based on a location of the item of interest in the two-dimensional geographic space, wherein the location of the item of interest is determined based on one or more attributes of the item of interest, the plurality of concentric regions are centered at a location of a reference item in the two-dimensional geographic space, and the location of the reference item is determined based on one or more attributes of the reference item that correspond to the one or more attributes of the item of interest. A GUI is then generated to represent the reference item and the plurality of items of interest in the two-dimensional geographic space such that the GUI includes a plurality of concentric display regions that correspond to the plurality of concentric regions in the two-dimensional geographic space, a select one of the plurality of concentric display regions provides an expanded view of one or more of the plurality of items of interest located in a corresponding one of the plurality of concentric regions in the two-dimensional geographic space, and each remaining one of the plurality of concentric display regions provides a collapsed view of one or more of the plurality of items of interest located in a corresponding one of the plurality of concentric regions in the two-dimensional geographic space. Changing a concentric display region from an expanded view to a collapsed view changes a location of an item of interest in the changed concentric display region to a location unrelated to the relative distance of the item of interest from the reference item while maintaining substantially a same bearing relative to the location of the reference item as the item of interest would be shown at in the expanded view. Presentation of the GUI is then effected. In one embodiment, the GUI is generated at a user device of the user and presentation of the GUI is effected by presenting the GUI to the user via a display of the user device. In another embodiment, the GUI is generated at a server computer connected to a user device of the user via a network, and presentation of the GUI to the user is effected by sending the GUI to the user device of the user via the network.

Other embodiments are described below.

Those skilled in the art will appreciate the scope of the present disclosure and realize additional aspects thereof after reading the following detailed description of the preferred embodiments in association with the accompanying drawing figures.

BRIEF DESCRIPTION OF THE DRAWING FIGURES

The accompanying drawing figures incorporated in and forming a part of this specification illustrate several aspects of the disclosure, and together with the description serve to explain the principles of the disclosure.

FIG. 1 illustrates a Mobile Aggregate Profile (MAP) system according to one embodiment of the present disclosure;

FIG. 2 is a block diagram of the MAP server of FIG. 1 according to one embodiment of the present disclosure;

FIG. 3 is a block diagram of the MAP client of one of the mobile devices of FIG. 1 according to one embodiment of the present disclosure;

FIG. 4 illustrates the operation of the system of FIG. 1 to provide user profiles and current locations of the users of the mobile devices to the MAP server according to one embodiment of the present disclosure;

FIG. 5 illustrates the operation of the system of FIG. 1 to provide user profiles and current locations of the users of the mobile devices to the MAP server according to another embodiment of the present disclosure;

FIG. 6 is a flow chart for a spatial crowd formation process according to one embodiment of the present disclosure;

FIGS. 7A through 7D graphically illustrate the crowd formation process of FIG. 6 for an exemplary bounding box;

FIGS. 8A through 8D illustrate a flow chart for a spatial crowd formation process according to another embodiment of the present disclosure;

FIGS. 9A through 9D graphically illustrate the crowd formation process of FIGS. 8A through 8D for a scenario where the crowd formation process is triggered by a location update for a user having no old location;

FIGS. 10A through 10F graphically illustrate the crowd formation process of FIGS. 8A through 8D for a scenario where the new and old bounding boxes overlap;

FIGS. 11A through 11E graphically illustrate the crowd formation process of FIGS. 8A through 8D in a scenario where the new and old bounding boxes do not overlap;

FIG. 12 illustrates the operation of the system of FIG. 1 to provide a Graphical User Interface (GUI) that represents crowds near a reference location according to one embodiment of the present disclosure;

FIGS. 13A through 13C illustrate an exemplary embodiment of the GUI generated and presented in the process of FIG. 12;

FIG. 14 illustrates the operation of the system of FIG. 1 to provide a GUI that represents crowds near a reference location according to another embodiment of the present disclosure;

FIG. 15 is a block diagram of the MAP server of FIG. 1 according to one embodiment of the present disclosure;

FIG. 16 is a block diagram of one of the mobile devices of FIG. 1 according to one embodiment of the present disclosure;

FIG. 17 is a block diagram of the subscriber device of FIG. 1 according to one embodiment of the present disclosure; and

FIG. 18 illustrates a more general process for generating and presenting a GUI that represents a reference item and a number of items of interest according to one embodiment of the present disclosure.

DETAILED DESCRIPTION

The embodiments set forth below represent the necessary information to enable those skilled in the art to practice the embodiments and illustrate the best mode of practicing the embodiments. Upon reading the following description in light of the accompanying drawing figures, those skilled in the art will understand the concepts of the disclosure and will recognize applications of these concepts not particularly addressed herein. It should be understood that these concepts and applications fall within the scope of the disclosure and the accompanying claims.

The present disclosure relates to a Graphical User Interface (GUI) for representing a reference item and a number of items of interest wherein placement of representations of the items of interest in the GUI is based on a comparison of one or more defined attributes of the reference item and the items of interest. FIGS. 1-11 describe an exemplary embodiment where the reference item is a reference geographic location (hereinafter “reference location”) and the items of interest are crowds of users located at or near the reference location. However, as also described, below, the present disclosure is not limited to a reference location and crowds of users. The GUI described herein may be utilized to represent any type of reference item and items of interest that can be represented in two-dimensional space based on comparisons of one or more defined attributes of the reference item and the one or more items of interest.

Before describing the generation and presentation of a GUI that represents a reference location and nearby crowds of users, it is beneficial to describe a system for forming crowds of users. FIG. 1 illustrates a Mobile Aggregate Profile (MAP) system 10 (hereinafter “system 10”) that operates to form crowds of users to enable generation and presentation of GUIs that represent reference locations and nearby crowds of users according to one embodiment of the present disclosure. Note that the system 10 is exemplary and is not intended to limit the scope of the present disclosure. In this embodiment, the system 10 includes a MAP server 12, one or more profile servers 14, a location server 16, a number of mobile devices 18-1 through 18-N (generally referred to herein collectively as mobile devices 18 and individually as mobile device 18) having associated users 20-1 through 20-N (generally referred to herein collectively as users 20 and individually as user 20), a subscriber device 22 having an associated subscriber 24, and a third-party service 26 communicatively coupled via a network 28. The network 28 may be any type of network or any combination of networks. Specifically, the network 28 may include wired components, wireless components, or both wired and wireless components. In one exemplary embodiment, the network 28 is a distributed public network such as the Internet, where the mobile devices 18 are enabled to connect to the network 28 via local wireless connections (e.g., Wi-Fi® or IEEE 802.11 connections) or wireless telecommunications connections (e.g., 3G or 4G telecommunications connections such as GSM, LTE, W-CDMA, or WiMAX® connections).

As discussed below in detail, the MAP server 12 operates to obtain current locations, including location updates, and user profiles of the users 20 of the mobile devices 18. The current locations of the users 20 can be expressed as positional geographic coordinates such as latitude-longitude pairs, and a height vector (if applicable), or any other similar information capable of identifying a given physical point in space in a two-dimensional or three-dimensional coordinate system. Using the current locations and user profiles of the users 20, the MAP server 12 is enabled to provide a number of features such as, but not limited to, forming crowds of users using current locations and/or user profiles of the users 20 and generating aggregate profiles for crowds of users. Note that while the MAP server 12 is illustrated as a single server for simplicity and ease of discussion, it should be appreciated that the MAP server 12 may be implemented as a single physical server or multiple physical servers operating in a collaborative manner for purposes of redundancy and/or load sharing.

In general, the one or more profile servers 14 operate to store user profiles for a number of persons including the users 20 of the mobile devices 18. For example, the one or more profile servers 14 may be servers providing social network services such as the Facebook® social networking service, the MySpace® social networking service, the LinkedIN® social networking service, or the like. As discussed below, using the one or more profile servers 14, the MAP server 12 is enabled to directly or indirectly obtain the user profiles of the users 20 of the mobile devices 18. The location server 16 generally operates to receive location updates from the mobile devices 18 and make the location updates available to entities such as, for instance, the MAP server 12. In one exemplary embodiment, the location server 16 is a server operating to provide Yahoo!'s Fire_Eagle® service.

The mobile devices 18 may be mobile smart phones, portable media player devices, mobile gaming devices, or the like. Some exemplary mobile devices that may be programmed or otherwise configured to operate as the mobile devices 18 are the Apple® iPhone®, the Palm Pre®, the Samsung Rogue™, the Blackberry Storm™, the Motorola Droid or similar phone running Google's Android™ Operating System, an Apple® iPad™, and the Apple® iPod Touch® device. However, this list of exemplary mobile devices is not exhaustive and is not intended to limit the scope of the present disclosure.

The mobile devices 18-1 through 18-N include MAP clients 30-1 through 30-N (generally referred to herein collectively as MAP clients 30 or individually as MAP client 30), MAP applications 32-1 through 32-N (generally referred to herein collectively as MAP applications 32 or individually as MAP application 32), third-party applications 34-1 through 34-N (generally referred to herein collectively as third-party applications 34 or individually as third-party application 34), and location functions 36-1 through 36-N (generally referred to herein collectively as location functions 36 or individually as location function 36), respectively. The MAP client 30 is preferably implemented in software. In general, in the preferred embodiment, the MAP client 30 is a middleware layer operating to interface an application layer (i.e., the MAP application 32 and the third-party applications 34) to the MAP server 12. More specifically, the MAP client 30 enables the MAP application 32 and the third-party applications 34 to request and receive data from the MAP server 12. In addition, the MAP client 30 enables applications, such as the MAP application 32 and the third-party applications 34, to access data from the MAP server 12.

The MAP application 32 is also preferably implemented in software. The MAP application 32 generally provides a user interface component between the user 20 and the MAP server 12. More specifically, among other things, the MAP application 32 enables the user 20 to initiate requests for crowd data from the MAP server 12 and present corresponding crowd data returned by the MAP server 12 to the user 20 as described below in detail. The MAP application 32 also enables the user 20 to configure various settings. For example, the MAP application 32 may enable the user 20 to select a desired social networking service (e.g., Facebook®, MySpace®, LinkedIN®, etc.) from which to obtain the user profile of the user 20 and provide any necessary credentials (e.g., username and password) needed to access the user profile from the social networking service.

The third-party applications 34 are preferably implemented in software. The third-party applications 34 operate to access the MAP server 12 via the MAP client 30. The third-party applications 34 may utilize data obtained from the MAP server 12 in any desired manner. As an example, one of the third-party applications 34 may be a gaming application that utilizes crowd data to notify the user 20 of Points of Interest (POIs) or Areas of Interest (AOIs) where crowds of interest are currently located. It should be noted that while the MAP client 30 is illustrated as being separate from the MAP application 32 and the third-party applications 34, the present disclosure is not limited thereto. The functionality of the MAP client 30 may alternatively be incorporated into the MAP application 32 and the third-party applications 34.

The location function 36 may be implemented in hardware, software, or a combination thereof. In general, the location function 36 operates to determine or otherwise obtain the location of the mobile device 18. For example, the location function 36 may be or include a Global Positioning System (GPS) receiver. In addition or alternatively, the location function 36 may include hardware and/or software that enables improved location tracking in indoor environments such as, for example, shopping malls. For example, the location function 36 may be part of or compatible with the InvisiTrack Location System provided by InvisiTrack and described in U.S. Pat. No. 7,423,580 entitled “Method and System of Three-Dimensional Positional Finding” which issued on Sep. 9, 2008, U.S. Pat. No. 7,787,886 entitled “System and Method for Locating a Target using RFID” which issued on Aug. 31, 2010, and U.S. Patent Application Publication No. 2007/0075898 entitled “Method and System for Positional Finding Using RF, Continuous and/or Combined Movement” which published on Apr. 5, 2007, all of which are hereby incorporated herein by reference for their teachings regarding location tracking.

The subscriber device 22 is a physical device such as a personal computer, a mobile computer (e.g., a notebook computer, a netbook computer, a tablet computer, etc.), a mobile smart phone, or the like. The subscriber 24 associated with the subscriber device 22 is a person or entity. In general, the subscriber device 22 enables the subscriber 24 to access the MAP server 12 via a web browser 38 to obtain various types of data, preferably for a fee. For example, the subscriber 24 may pay a fee to have access to crowd data such as aggregate profiles for crowds located at one or more POIs and/or located in one or more AOIs, pay a fee to track crowds, or the like. Note that the web browser 38 is exemplary. In another embodiment, the subscriber device 22 is enabled to access the MAP server 12 via a custom application.

Lastly, the third-party service 26 is a service that has access to data from the MAP server 12 such as aggregate profiles for one or more crowds at one or more POIs or within one or more AOIs. Based on the data from the MAP server 12, the third-party service 26 operates to provide a service such as, for example, targeted advertising. For example, the third-party service 26 may obtain anonymous aggregate profile data for one or more crowds located at a POI and then provide targeted advertising to known users located at the POI based on the anonymous aggregate profile data. Note that while targeted advertising is mentioned as an exemplary third-party service 26, other types of third-party services 26 may additionally or alternatively be provided. Other types of third-party services 26 that may be provided will be apparent to one of ordinary skill in the art upon reading this disclosure.

Before proceeding, it should be noted that while the system 10 of FIG. 1 illustrates an embodiment where the one or more profile servers 14 and the location server 16 are separate from the MAP server 12, the present disclosure is not limited thereto. In an alternative embodiment, the functionality of the one or more profile servers 14 and/or the location server 16 may be implemented within the MAP server 12.

FIG. 2 is a block diagram of the MAP server 12 of FIG. 1 according to one embodiment of the present disclosure. As illustrated, the MAP server 12 includes an application layer 40, a business logic layer 42, and a persistence layer 44. The application layer 40 includes a user web application 46, a mobile client/server protocol component 48, and one or more data Application Programming Interfaces (APIs) 50. The user web application 46 is preferably implemented in software and operates to provide a web interface for users, such as the subscriber 24, to access the MAP server 12 via a web browser. The mobile client/server protocol component 48 is preferably implemented in software and operates to provide an interface between the MAP server 12 and the MAP clients 30 hosted by the mobile devices 18. The data APIs 50 enable third-party services, such as the third-party service 26, to access the MAP server 12.

The business logic layer 42 includes a profile manager 52, a location manager 54, a history manager 56, a crowd analyzer 58, and an aggregation engine 60 each of which is preferably implemented in software. The profile manager 52 generally operates to obtain the user profiles of the users 20 directly or indirectly from the one or more profile servers 14 and store the user profiles in the persistence layer 44. The location manager 54 operates to obtain the current locations of the users 20 including location updates. As discussed below, the current locations of the users 20 may be obtained directly from the mobile devices 18 and/or obtained from the location server 16.

The history manager 56 generally operates to maintain a historical record of anonymized user profile data by location. Note that while the user profile data stored in the historical record is preferably anonymized, it is not limited thereto. The crowd analyzer 58 operates to form crowds of users. In one embodiment, the crowd analyzer 58 utilizes a spatial crowd formation algorithm. However, the present disclosure is not limited thereto. In addition, the crowd analyzer 58 may further characterize crowds to reflect degree of fragmentation, best-case and worst-case degree of separation (DOS), and/or degree of bi-directionality. Still further, the crowd analyzer 58 may also operate to track crowds. The aggregation engine 60 generally operates to provide aggregate profile data in response to requests from the mobile devices 18, the subscriber device 22, and the third-party service 26. The aggregate profile data may be historical aggregate profile data for one or more POIs or one or more AOIs or aggregate profile data for crowd(s) currently at one or more POIs or within one or more AOIs. For additional information regarding the operation of the profile manager 52, the location manager 54, the history manager 56, the crowd analyzer 58, and the aggregation engine 60, the interested reader is directed to U.S. Patent Publication number 2010/0198828, entitled FORMING CROWDS AND PROVIDING ACCESS TO CROWD DATA IN A MOBILE ENVIRONMENT, which was filed Dec. 23, 2009 and published Aug. 5, 2010; U.S. Patent Application Publication number 2010/0197318, entitled ANONYMOUS CROWD TRACKING, which was filed Dec. 23, 2009 and published Aug. 5, 2010; U.S. Patent Application Publication number 2010/0198826, entitled MAINTAINING A HISTORICAL RECORD OF ANONYMIZED USER PROFILE DATA BY LOCATION FOR USERS IN A MOBILE ENVIRONMENT, which was filed Dec. 23, 2009 and published Aug. 5, 2010; U.S. Patent Application Publication number 2010/0198917, entitled CROWD FORMATION FOR MOBILE DEVICE USERS, which was filed Dec. 23, 2009 and published Aug. 5, 2010; U.S. Patent Application Publication number 2010/0198870, entitled SERVING A REQUEST FOR DATA FROM A HISTORICAL RECORD OF ANONYMIZED USER PROFILE DATA IN A MOBILE ENVIRONMENT, which was filed Dec. 23, 2009 and published Aug. 5, 2010; U.S. Patent Application Publication number 2010/0198862, entitled HANDLING CROWD REQUESTS FOR LARGE GEOGRAPHIC AREAS, which was filed Dec. 23, 2009 and published Aug. 5, 2010; and U.S. Patent Application Publication number 2010/0197319, entitled MODIFYING A USER'S CONTRIBUTION TO AN AGGREGATE PROFILE BASED ON TIME BETWEEN LOCATION UPDATES AND EXTERNAL EVENTS, which was filed Dec. 23, 2009 and published Aug. 5, 2010; all of which are hereby incorporated herein by reference in their entireties.

The persistence layer 44 includes an object mapping layer 62 and a datastore 64. The object mapping layer 62 is preferably implemented in software. The datastore 64 is preferably a relational database, which is implemented in a combination of hardware (i.e., physical data storage hardware) and software (i.e., relational database software). In this embodiment, the business logic layer 42 is implemented in an object-oriented programming language such as, for example, Java. As such, the object mapping layer 62 operates to map objects used in the business logic layer 42 to relational database entities stored in the datastore 64. Note that, in one embodiment, data is stored in the datastore 64 in a Resource Description Framework (RDF) compatible format.

In an alternative embodiment, rather than being a relational database, the datastore 64 may be implemented as an RDF datastore. More specifically, the RDF datastore may be compatible with RDF technology adopted by Semantic Web activities. Namely, the RDF datastore may use the Friend-Of-A-Friend (FOAF) vocabulary for describing people, their social networks, and their interests. In this embodiment, the MAP server 12 may be designed to accept raw FOAF files describing persons, their friends, and their interests. These FOAF files are currently output by some social networking services such as LiveJournal® and Facebook®. The MAP server 12 may then persist RDF descriptions of the users 20 as a proprietary extension of the FOAF vocabulary that includes additional properties desired for the system 10.

FIG. 3 illustrates the MAP client 30 of FIG. 1 in more detail according to one embodiment of the present disclosure. As illustrated, in this embodiment, the MAP client 30 includes a MAP access API 66, a MAP middleware component 68, and a mobile client/server protocol component 70. The MAP access API 66 is implemented in software and provides an interface by which the MAP client 30 and the third-party applications 34 are enabled to access the MAP client 30. The MAP middleware component 68 is implemented in software and performs the operations needed for the MAP client 30 to operate as an interface between the MAP application 32 and the third-party applications 34 at the mobile device 18 and the MAP server 12. The mobile client/server protocol component 70 enables communication between the MAP client 30 and the MAP server 12 via a defined protocol.

FIG. 4 illustrates the operation of the system 10 of FIG. 1 to provide the user profile of one of the users 20 of one of the mobile devices 18 to the MAP server 12 according to one embodiment of the present disclosure. This discussion is equally applicable to the other users 20 of the other mobile devices 18. First, an authentication process is performed (step 1000). For authentication, in this embodiment, the mobile device 18 authenticates with the profile server 14 (step 1000A) and the MAP server 12 (step 1000B). In addition, the MAP server 12 authenticates with the profile server 14 (step 1000C). Preferably, authentication is performed using OpenID or similar technology. However, authentication may alternatively be performed using separate credentials (e.g., username and password) of the user 20 for access to the MAP server 12 and the profile server 14. Assuming that authentication is successful, the profile server 14 returns an authentication succeeded message to the MAP server 12 (step 1000D), and the profile server 14 returns an authentication succeeded message to the MAP client 30 of the mobile device 18 (step 1000E).

At some point after authentication is complete, a user profile process is performed such that a user profile of the user 20 is obtained from the profile server 14 and delivered to the MAP server 12 (step 1002). In this embodiment, the MAP client 30 of the mobile device 18 sends a profile request to the profile server 14 (step 1002A). In response, the profile server 14 returns the user profile of the user 20 to the mobile device 18 (step 1002B). The MAP client 30 of the mobile device 18 then sends the user profile of the user 20 to the MAP server 12 (step 1002C). Note that while in this embodiment the MAP client 30 sends the complete user profile of the user 20 to the MAP server 12, in an alternative embodiment, the MAP client 30 may filter the user profile of the user 20 according to criteria specified by the user 20. For example, the user profile of the user 20 may include demographic information, general interests, music interests, and movie interests, and the user 20 may specify that the demographic information or some subset thereof is to be filtered, or removed, before sending the user profile to the MAP server 12.

Upon receiving the user profile of the user 20 from the MAP client 30 of the mobile device 18, the profile manager 52 of the MAP server 12 processes the user profile (step 1002D). More specifically, in the preferred embodiment, the profile manager 52 includes social network handlers for the social network services supported by the MAP server 12 that operate to map the user profiles of the users 20 obtained from the social network services to a common format utilized by the MAP server 12. This common format includes a number of user profile categories, or user profile slices, such as, for example, a demographic profile category, a social interaction profile category, a general interests category, a music interests profile category, and a movie interests profile category. For example, if the MAP server 12 supports user profiles from Facebook®, MySpace®, and LinkedIN®, the profile manager 52 may include a Facebook handler, a MySpace handler, and a LinkedIN handler. The social network handlers process user profiles from the corresponding social network services to generate user profiles for the users 20 in the common format used by the MAP server 12. For this example assume that the user profile of the user 20 is from Facebook®. The profile manager 52 uses a Facebook handler to process the user profile of the user 20 to map the user profile of the user 20 from Facebook® to a user profile for the user 20 for the MAP server 12 that includes lists of keywords for a number of predefined profile categories, or profile slices, such as, for example, a demographic profile category, a social interaction profile category, a general interests profile category, a music interests profile category, and a movie interests profile category. As such, the user profile of the user 20 from Facebook® may be processed by the Facebook handler of the profile manager 52 to create a list of keywords such as, for example, liberal, High School Graduate, 35-44, College Graduate, etc. for the demographic profile category; a list of keywords such as Seeking Friendship for the social interaction profile category; a list of keywords such as politics, technology, photography, books, etc. for the general interests profile category; a list of keywords including music genres, artist names, album names, or the like for the music interests profile category; and a list of keywords including movie titles, actor or actress names, director names, movie genres, or the like for the movie interests profile category. In one embodiment, the profile manager 52 may use natural language processing or semantic analysis. For example, if the Facebook® user profile of the user 20 states that the user 20 is 20 years old, semantic analysis may result in the keyword of 18-24 years old being stored in the user profile of the user 20 for the MAP server 12.

After processing the user profile of the user 20, the profile manager 52 of the MAP server 12 stores the resulting user profile for the user 20 (step 1002E). More specifically, in one embodiment, the MAP server 12 stores user records for the users 20 in the datastore 64 (FIG. 2). The user profile of the user 20 is stored in the user record of the user 20. The user record of the user 20 includes a unique identifier of the user 20, the user profile of the user 20, and, as discussed below, a current location of the user 20. Note that the user profile of the user 20 may be updated as desired. For example, in one embodiment, the user profile of the user 20 is updated by repeating step 1002 each time the user 20 activates the MAP application 32.

Note that while the discussion herein focuses on an embodiment where the user profiles of the users 20 are obtained from the one or more profile servers 14, the user profiles of the users 20 may be obtained in any desired manner. For example, in one alternative embodiment, the user 20 may identify one or more favorite websites. The profile manager 52 of the MAP server 12 may then crawl the one or more favorite websites of the user 20 to obtain keywords appearing in the one or more favorite websites of the user 20. These keywords may then be stored as the user profile of the user 20.

At some point, a process is performed such that a current location of the mobile device 18 and thus a current location of the user 20 is obtained by the MAP server 12 (step 1004). In this embodiment, the MAP application 32 of the mobile device 18 obtains the current location of the mobile device 18 from the location function 36 of the mobile device 18. The MAP application 32 then provides the current location of the mobile device 18 to the MAP client 30, and the MAP client 30 then provides the current location of the mobile device 18 to the MAP server 12 (step 1004A). Note that step 1004A may be repeated periodically or in response to a change in the current location of the mobile device 18 in order for the MAP application 32 to provide location updates for the user 20 to the MAP server 12.

In response to receiving the current location of the mobile device 18, the location manager 54 of the MAP server 12 stores the current location of the mobile device 18 as the current location of the user 20 (step 1004B). More specifically, in one embodiment, the current location of the user 20 is stored in the user record of the user 20 maintained in the datastore 64 of the MAP server 12. Note that, in the preferred embodiment, only the current location of the user 20 is stored in the user record of the user 20. In this manner, the MAP server 12 maintains privacy for the user 20 since the MAP server 12 does not maintain a historical record of the location of the user 20. Any historical data maintained by the MAP server 12 is preferably anonymized by the history manager 56 in order to maintain the privacy of the users 20.

In addition to storing the current location of the user 20, the location manager 54 sends the current location of the user 20 to the location server 16 (step 1004C). In this embodiment, by providing location updates to the location server 16, the MAP server 12 in return receives location updates for the user 20 from the location server 16. This is particularly beneficial when the mobile device 18 does not permit background processes. If the mobile device 18 does not permit background processes, the MAP application 32 will not be able to provide location updates for the user 20 to the MAP server 12 unless the MAP application 32 is active. Therefore, when the MAP application 32 is not active, other applications running on the mobile device 18 (or some other device of the user 20) may directly or indirectly provide location updates to the location server 16 for the user 20. This is illustrated in step 1006 where the location server 16 receives a location update for the user 20 directly or indirectly from another application running on the mobile device 18 or an application running on another device of the user 20 (step 1006A). The location server 16 then provides the location update for the user 20 to the MAP server 12 (step 1006B). In response, the location manager 54 updates and stores the current location of the user 20 in the user record of the user 20 (step 1006C). In this manner, the MAP server 12 is enabled to obtain location updates for the user 20 even when the MAP application 32 is not active at the mobile device 18.

FIG. 5 illustrates the operation of the system 10 of FIG. 1 to provide the user profile of the user 20 of one of the mobile devices 18 to the MAP server 12 according to another embodiment of the present disclosure. This discussion is equally applicable to user profiles of the users 20 of the other mobile devices 18. First, an authentication process is performed (step 1100). For authentication, in this embodiment, the mobile device 18 authenticates with the MAP server 12 (step 1100A), and the MAP server 12 authenticates with the profile server 14 (step 1100B). Preferably, authentication is performed using OpenID or similar technology. However, authentication may alternatively be performed using separate credentials (e.g., username and password) of the user 20 for access to the MAP server 12 and the profile server 14. Assuming that authentication is successful, the profile server 14 returns an authentication succeeded message to the MAP server 12 (step 1100C), and the MAP server 12 returns an authentication succeeded message to the MAP client 30 of the mobile device 18 (step 1100D).

At some point after authentication is complete, a user profile process is performed such that a user profile of the user 20 is obtained from the profile server 14 and delivered to the MAP server 12 (step 1102). In this embodiment, the profile manager 52 of the MAP server 12 sends a profile request to the profile server 14 (step 1102A). In response, the profile server 14 returns the user profile of the user 20 to the profile manager 52 of the MAP server 12 (step 1102B). Note that while in this embodiment the profile server 14 returns the complete user profile of the user 20 to the MAP server 12, in an alternative embodiment, the profile server 14 may return a filtered version of the user profile of the user 20 to the MAP server 12. The profile server 14 may filter the user profile of the user 20 according to criteria specified by the user 20. For example, the user profile of the user 20 may include demographic information, general interests, music interests, and movie interests, and the user 20 may specify that the demographic information or some subset thereof is to be filtered, or removed, before sending the user profile to the MAP server 12.

Upon receiving the user profile of the user 20, the profile manager 52 of the MAP server 12 processes the user profile (step 1102C). More specifically, as discussed above, in the preferred embodiment, the profile manager 52 includes social network handlers for the social network services supported by the MAP server 12. The social network handlers process user profiles to generate user profiles for the MAP server 12 that include lists of keywords for each of a number of profile categories, or profile slices.

After processing the user profile of the user 20, the profile manager 52 of the MAP server 12 stores the resulting user profile for the user 20 (step 1102D). More specifically, in one embodiment, the MAP server 12 stores user records for the users 20 in the datastore 64 (FIG. 2). The user profile of the user 20 is stored in the user record of the user 20. The user record of the user 20 includes a unique identifier of the user 20, the user profile of the user 20, and, as discussed below, a current location of the user 20. Note that the user profile of the user 20 may be updated as desired. For example, in one embodiment, the user profile of the user 20 is updated by repeating step 1102 each time the user 20 activates the MAP application 32.

Note that while the discussion herein focuses on an embodiment where the user profiles of the users 20 are obtained from the one or more profile servers 14, the user profiles of the users 20 may be obtained in any desired manner. For example, in one alternative embodiment, the user 20 may identify one or more favorite websites. The profile manager 52 of the MAP server 12 may then crawl the one or more favorite websites of the user 20 to obtain keywords appearing in the one or more favorite websites of the user 20. These keywords may then be stored as the user profile of the user 20.

At some point, a process is performed such that a current location of the mobile device 18 and thus a current location of the user 20 is obtained by the MAP server 12 (step 1104). In this embodiment, the MAP application 32 of the mobile device 18 obtains the current location of the mobile device 18 from the location function 36 of the mobile device 18. The MAP application 32 then provides the current location of the user 20 of the mobile device 18 to the location server 16 (step 1104A). Note that step 1104A may be repeated periodically or in response to changes in the location of the mobile device 18 in order to provide location updates for the user 20 to the MAP server 12. The location server 16 then provides the current location of the user 20 to the MAP server 12 (step 1104B). The location server 16 may provide the current location of the user 20 to the MAP server 12 automatically in response to receiving the current location of the user 20 from the mobile device 18 or in response to a request from the MAP server 12.

In response to receiving the current location of the mobile device 18, the location manager 54 of the MAP server 12 stores the current location of the mobile device 18 as the current location of the user 20 (step 1104C). More specifically, in one embodiment, the current location of the user 20 is stored in the user record of the user 20 maintained in the datastore 64 of the MAP server 12. Note that, in the preferred embodiment, only the current location of the user 20 is stored in the user record of the user 20. In this manner, the MAP server 12 maintains privacy for the user 20 since the MAP server 12 does not maintain a historical record of the location of the user 20. As discussed below in detail, historical data maintained by the MAP server 12 is preferably anonymized in order to maintain the privacy of the users 20.

As discussed above, the use of the location server 16 is particularly beneficial when the mobile device 18 does not permit background processes. As such, if the mobile device 18 does not permit background processes, the MAP application 32 will not provide location updates for the user 20 to the location server 16 unless the MAP application 32 is active. However, other applications running on the mobile device 18 (or some other device of the user 20) may provide location updates to the location server 16 for the user 20 when the MAP application 32 is not active. This is illustrated in step 1106 where the location server 16 receives a location update for the user 20 from another application running on the mobile device 18 or an application running on another device of the user 20 (step 1106A). The location server 16 then provides the location update for the user 20 to the MAP server 12 (step 1106B). In response, the location manager 54 updates and stores the current location of the user 20 in the user record of the user 20 (step 1106C). In this manner, the MAP server 12 is enabled to obtain location updates for the user 20 even when the MAP application 32 is not active at the mobile device 18.

FIG. 6 begins a discussion of the operation of the crowd analyzer 58 to form crowds of users according to one embodiment of the present disclosure. Specifically, FIG. 6 is a flow chart for a spatial crowd formation process according to one embodiment of the present disclosure. Note that, in one embodiment, this process is performed in response to a request for crowd data for a POI or an AOI or in response to a crowd search request. In another embodiment, this process may be performed proactively by the crowd analyzer 58 as, for example, a background process.

First, the crowd analyzer 58 establishes a bounding box for the crowd formation process (step 1200). Note that while a bounding box is used in this example, other geographic shapes may be used to define a bounding region for the crowd formation process (e.g., a bounding circle). In one embodiment, if crowd formation is performed in response to a specific request, the bounding box is established based on the POI or the AOI of the request. If the request is for a POI, then the bounding box is a geographic area of a predetermined size centered at the POI. If the request is for an AOI, the bounding box is the AOI. Alternatively, if the crowd formation process is performed proactively, the bounding box is a bounding box of a predefined size.

The crowd analyzer 58 then creates a crowd for each individual user in the bounding box (step 1202). More specifically, the crowd analyzer 58 queries the datastore 64 of the MAP server 12 to identify users currently located within the bounding box. Then, a crowd of one user is created for each user currently located within the bounding box. Next, the crowd analyzer 58 determines the two closest crowds in the bounding box (step 1204) and determines a distance between the two crowds (step 1206). The distance between the two crowds is a distance between crowd centers of the two crowds. Note that the crowd center of a crowd of one is the current location of the user in the crowd. The crowd analyzer 58 then determines whether the distance between the two crowds is less than an optimal inclusion distance (step 1208). In this embodiment, the optimal inclusion distance is a predefined static distance. If the distance between the two crowds is less than the optimal inclusion distance, the crowd analyzer 58 combines the two crowds (step 1210) and computes a new crowd center for the resulting crowd (step 1212). The crowd center may be computed based on the current locations of the users in the crowd using a center of mass algorithm. At this point the process returns to step 1204 and is repeated until the distance between the two closest crowds is not less than the optimal inclusion distance. At that point, the crowd analyzer 58 discards any crowds with less than three users (step 1214). Note that throughout this disclosure crowds are only maintained if the crowds include three or more users. However, while three users is the preferred minimum number of users in a crowd, the present disclosure is not limited thereto. The minimum number of users in a crowd may be defined as any number greater than or equal to two users.

FIGS. 7A through 7D graphically illustrate the crowd formation process of FIG. 6 for an exemplary bounding box 72. In FIGS. 7A through 7D, crowds are noted by dashed circles, and the crowd centers are noted by cross-hairs (+). As illustrated in FIG. 7A, initially, the crowd analyzer 58 creates crowds 74 through 82 for the users in the geographic area defined by the bounding box 72, where, at this point, each of the crowds 74 through 82 includes one user. The current locations of the users are the crowd centers of the crowds 74 through 82. Next, the crowd analyzer 58 determines the two closest crowds and a distance between the two closest crowds. In this example, at this point, the two closest crowds are crowds 76 and 78, and the distance between the two closest crowds 76 and 78 is less than the optimal inclusion distance. As such, the two closest crowds 76 and 78 are combined by merging crowd 78 into crowd 76, and a new crowd center (+) is computed for the crowd 76, as illustrated in FIG. 7B. Next, the crowd analyzer 58 again determines the two closest crowds, which are now crowds 74 and 76. The crowd analyzer 58 then determines a distance between the crowds 74 and 76. Since the distance is less than the optimal inclusion distance, the crowd analyzer 58 combines the two crowds 74 and 76 by merging the crowd 74 into the crowd 76, and a new crowd center (+) is computed for the crowd 76, as illustrated in FIG. 7C. At this point, there are no more crowds separated by less than the optimal inclusion distance. As such, the crowd analyzer 58 discards crowds having less than three users, which in this example are crowds 80 and 82. As a result, at the end of the crowd formation process, the crowd 76 has been formed with three users, as illustrated in FIG. 7D.

FIGS. 8A through 8D illustrate a flow chart for a spatial crowd formation process according to another embodiment of the present disclosure. In this embodiment, the spatial crowd formation process is triggered in response to receiving a location update for one of the users 20 and is preferably repeated for each location update received for the users 20. As such, first, the crowd analyzer 58 receives a location update, or a new location, for a user (step 1300). Assume that, for this example, the location update is received for the user 20-1. In response, the crowd analyzer 58 retrieves an old location of the user 20-1, if any (step 1302). The old location is the current location of the user 20-1 prior to receiving the new location. The crowd analyzer 58 then creates a new bounding box of a predetermined size centered at the new location of the user 20-1 (step 1304) and an old bounding box of a predetermined size centered at the old location of the user 20-1, if any (step 1306). The predetermined size of the new and old bounding boxes may be any desired size. As one example, the predetermined size of the new and old bounding boxes is 40 meters by 40 meters. Note that if the user 20-1 does not have an old location (i.e., the location received in step 1300 is the first location received for the user 20-1), then the old bounding box is essentially null. Also note that while bounding “boxes” are used in this example, the bounding areas may be of any desired shape.

Next, the crowd analyzer 58 determines whether the new and old bounding boxes overlap (step 1308). If so, the crowd analyzer 58 creates a bounding box encompassing the new and old bounding boxes (step 1310). For example, if the new and old bounding boxes are 40×40 meter regions and a 1×1 meter square at the northeast corner of the new bounding box overlaps a 1×1 meter square at the southwest corner of the old bounding box, the crowd analyzer 58 may create a 79×79 meter square bounding box encompassing both the new and old bounding boxes.

The crowd analyzer 58 then determines the individual users and crowds relevant to the bounding box created in step 1310 (step 1312). The crowds relevant to the bounding box are crowds that are within or overlap the bounding box (e.g., have at least one user located within the bounding box). The individual users relevant to the bounding box are users that are currently located within the bounding box and not already part of a crowd. Next, the crowd analyzer 58 computes an optimal inclusion distance for individual users based on user density within the bounding box (step 1314). More specifically, in one embodiment, the optimal inclusion distance for individuals, which is also referred to herein as an initial optimal inclusion distance, is set according to the following equation:

$\begin{matrix} {{{{initial\_ optimal}{\_ inclusion}{\_ dist}} = {a \cdot \sqrt{\frac{A_{BoundingBox}}{{number\_ of}{\_ users}}}}},} & {{Eqn}.\mspace{14mu} (1)} \end{matrix}$

where a is a number between 0 and 1, A_(BoundingBox) is an area of the bounding box, and number_of_users is the total number of users in the bounding box. The total number of users in the bounding box includes both individual users that are not already in a crowd and users that are already in a crowd. In one embodiment, a is ⅔.

The crowd analyzer 58 then creates a crowd for each individual user within the bounding box that is not already included in a crowd and sets the optimal inclusion distance for the crowds to the initial optimal inclusion distance (step 1316). At this point, the process proceeds to FIG. 8B where the crowd analyzer 58 analyzes the crowds relevant to the bounding box to determine whether any of the crowd members (i.e., users in the crowds) violate the optimal inclusion distance of their crowds (step 1318). Any crowd member that violates the optimal inclusion distance of his or her crowd is then removed from that crowd (step 1320). The crowd analyzer 58 then creates a crowd of one user for each of the users removed from their crowds in step 1320 and sets the optimal inclusion distance for the newly created crowds to the initial optimal inclusion distance (step 1322).

Next, the crowd analyzer 58 determines the two closest crowds for the bounding box (step 1324) and a distance between the two closest crowds (step 1326). The distance between the two closest crowds is the distance between the crowd centers of the two closest crowds. The crowd analyzer 58 then determines whether the distance between the two closest crowds is less than the optimal inclusion distance of a larger of the two closest crowds (step 1328). If the two closest crowds are of the same size (i.e., have the same number of users), then the optimal inclusion distance of either of the two closest crowds may be used. Alternatively, if the two closest crowds are of the same size, the optimal inclusion distances of both of the two closest crowds may be used such that the crowd analyzer 58 determines whether the distance between the two closest crowds is less than the optimal inclusion distances of both of the two closest crowds. As another alternative, if the two closest crowds are of the same size, the crowd analyzer 58 may compare the distance between the two closest crowds to an average of the optimal inclusion distances of the two closest crowds.

If the distance between the two closest crowds is not less than the optimal inclusion distance, then the process proceeds to step 1338. Otherwise, the two closest crowds are combined or merged (step 1330), and a new crowd center for the resulting crowd is computed (step 1332). Again, a center of mass algorithm may be used to compute the crowd center of a crowd. In addition, a new optimal inclusion distance for the resulting crowd is computed (step 1334). In one embodiment, the new optimal inclusion distance for the resulting crowd is computed as:

$\begin{matrix} {{{average} = {\frac{1}{n + 1} \cdot \left( {{{initial\_ optimal}{\_ inclusion}{\_ dist}} + {\sum\limits_{i = 1}^{n}d_{i}}} \right)}},} & {{Eqn}.\mspace{14mu} (2)} \\ {{{optimal\_ inclusion}{\_ dist}} = {{average} + \sqrt{\left( {\frac{1}{n} \cdot {\sum\limits_{i = 1}^{n}\left( {d_{i} - {average}} \right)^{2}}} \right)}}} & {{Eqn}.\mspace{14mu} (3)} \end{matrix}$

where n is the number of users in the crowd and d_(i) is a distance between the ith user and the crowd center. In other words, the new optimal inclusion distance is computed as the average of the initial optimal inclusion distance and the distances between the users in the crowd and the crowd center plus one standard deviation.

At this point, the crowd analyzer 58 determines whether a maximum number of iterations have been performed (step 1336). The maximum number of iterations is a predefined number that ensures that the crowd formation process does not indefinitely loop over steps 1318 through 1334 or loop over steps 1318 through 1334 more than a desired maximum number of times. If the maximum number of iterations has not been reached, the process returns to step 1318 and is repeated until either the distance between the two closest crowds is not less than the optimal inclusion distance of the larger crowd or the maximum number of iterations has been reached. At that point, the crowd analyzer 58 discards crowds with less than three users, or members (step 1338) and the process ends.

Returning to step 1308 in FIG. 8A, if the new and old bounding boxes do not overlap, the process proceeds to FIG. 8C and the bounding box to be processed is set to the old bounding box (step 1340). In general, the crowd analyzer 58 then processes the old bounding box in much the same manner as described above with respect to steps 1312 through 1338. More specifically, the crowd analyzer 58 determines the individual users and crowds relevant to the bounding box (step 1342). The crowds relevant to the bounding box are crowds that are within or overlap the bounding box (e.g., have at least one user located within the bounding box). The individual users relevant to the bounding box are users that are currently located within the bounding box and not already part of a crowd. Next, the crowd analyzer 58 computes an optimal inclusion distance for individual users based on user density within the bounding box (step 1344). More specifically, in one embodiment, the optimal inclusion distance for individuals, which is also referred to herein as an initial optimal inclusion distance, is set according to the following equation:

$\begin{matrix} {{{{initial\_ optimal}{\_ inclusion}{\_ dist}} = {a \cdot \sqrt{\frac{A_{BoundingBox}}{{number\_ of}{\_ users}}}}},} & {{Eqn}.\mspace{14mu} (4)} \end{matrix}$

where a is a number between 0 and 1, A_(BoundingBox) is an area of the bounding box, and number_of_users is the total number of users in the bounding box. The total number of users in the bounding box includes both individual users that are not already in a crowd and users that are already in a crowd. In one embodiment, a is ⅔.

The crowd analyzer 58 then creates a crowd of one user for each individual user within the bounding box that is not already included in a crowd and sets the optimal inclusion distance for the crowds to the initial optimal inclusion distance (step 1346). At this point, the crowd analyzer 58 analyzes the crowds for the bounding box to determine whether any crowd members (i.e., users in the crowds) violate the optimal inclusion distance of their crowds (step 1348). Any crowd member that violates the optimal inclusion distance of his or her crowd is then removed from that crowd (step 1350). The crowd analyzer 58 then creates a crowd of one user for each of the users removed from their crowds in step 1350 and sets the optimal inclusion distance for the newly created crowds to the initial optimal inclusion distance (step 1352).

Next, the crowd analyzer 58 determines the two closest crowds in the bounding box (step 1354) and a distance between the two closest crowds (step 1356). The distance between the two closest crowds is the distance between the crowd centers of the two closest crowds. The crowd analyzer 58 then determines whether the distance between the two closest crowds is less than the optimal inclusion distance of a larger of the two closest crowds (step 1358). If the two closest crowds are of the same size (i.e., have the same number of users), then the optimal inclusion distance of either of the two closest crowds may be used. Alternatively, if the two closest crowds are of the same size, the optimal inclusion distances of both of the two closest crowds may be used such that the crowd analyzer 58 determines whether the distance between the two closest crowds is less than the optimal inclusion distances of both of the two closest crowds. As another alternative, if the two closest crowds are of the same size, the crowd analyzer 58 may compare the distance between the two closest crowds to an average of the optimal inclusion distances of the two closest crowds.

If the distance between the two closest crowds is not less than the optimal inclusion distance, the process proceeds to step 1368. Otherwise, the two closest crowds are combined or merged (step 1360), and a new crowd center for the resulting crowd is computed (step 1362). Again, a center of mass algorithm may be used to compute the crowd center of a crowd. In addition, a new optimal inclusion distance for the resulting crowd is computed (step 1364). As discussed above, in one embodiment, the new optimal inclusion distance for the resulting crowd is computed as:

$\begin{matrix} {{{average} = {\frac{1}{n + 1} \cdot \left( {{{initial\_ optimal}{\_ inclusion}{\_ dist}} + {\sum\limits_{i = 1}^{n}d_{i}}} \right)}},} & {{Eqn}.\mspace{14mu} (5)} \\ {{{optimal\_ inclusion}{\_ dist}} = {{average} + \sqrt{\left( {\frac{1}{n} \cdot {\sum\limits_{i = 1}^{n}\left( {d_{i} - {average}} \right)^{2}}} \right)}}} & {{Eqn}.\mspace{14mu} (6)} \end{matrix}$

where n is the number of users in the crowd and d_(i) is a distance between the ith user and the crowd center. In other words, the new optimal inclusion distance is computed as the average of the initial optimal inclusion distance and the distances between the users in the crowd and the crowd center plus one standard deviation.

At this point, the crowd analyzer 58 determines whether a maximum number of iterations have been performed (step 1366). If the maximum number of iterations has not been reached, the process returns to step 1348 and is repeated until either the distance between the two closest crowds is not less than the optimal inclusion distance of the larger crowd or the maximum number of iterations has been reached. At that point, the crowd analyzer 58 discards crowds with less than three users, or members (step 1368). The crowd analyzer 58 then determines whether the crowd formation process for the new and old bounding boxes is done (step 1370). In other words, the crowd analyzer 58 determines whether both the new and old bounding boxes have been processed. If not, the bounding box is set to the new bounding box (step 1372), and the process returns to step 1342 and is repeated for the new bounding box. Once both the new and old bounding boxes have been processed, the crowd formation process ends.

FIGS. 9A through 9D graphically illustrate the crowd formation process of FIGS. 8A through 8D for a scenario where the crowd formation process is triggered by a location update for a user having no old location. In this scenario, the crowd analyzer 58 creates a new bounding box 84 for the new location of the user, and the new bounding box 84 is set as the bounding box to be processed for crowd formation. Then, as illustrated in FIG. 9A, the crowd analyzer 58 identifies all individual users currently located within the new bounding box 84 and all crowds located within or overlapping the new bounding box 84. In this example, crowd 86 is an existing crowd relevant to the new bounding box 84. Crowds are indicated by dashed circles, crowd centers are indicated by cross-hairs (+), and users are indicated as dots. Next, as illustrated in FIG. 9B, the crowd analyzer 58 creates crowds 88 through 92 of one user for the individual users, and the optimal inclusion distances of the crowds 88 through 92 are set to the initial optimal inclusion distance. As discussed above, the initial optimal inclusion distance is computed by the crowd analyzer 58 based on a density of users within the new bounding box 84.

The crowd analyzer 58 then identifies the two closest crowds 88 and 90 in the new bounding box 84 and determines a distance between the two closest crowds 88 and 90. In this example, the distance between the two closest crowds 88 and 90 is less than the optimal inclusion distance. As such, the two closest crowds 88 and 90 are merged and a new crowd center and new optimal inclusion distance are computed, as illustrated in FIG. 9C. The crowd analyzer 58 then repeats the process such that the two closest crowds 88 and 92 in the new bounding box 84 are again merged, as illustrated in FIG. 9D. At this point, the distance between the two closest crowds 86 and 88 is greater than the appropriate optimal inclusion distance. As such, the crowd formation process is complete.

FIGS. 10A through 10F graphically illustrate the crowd formation process of FIGS. 8A through 8D for a scenario where the new and old bounding boxes overlap. As illustrated in FIG. 10A, a user moves from an old location to a new location, as indicated by an arrow. The crowd analyzer 58 receives a location update for the user giving the new location of the user. In response, the crowd analyzer 58 creates an old bounding box 94 for the old location of the user and a new bounding box 96 for the new location of the user. Crowd 98 exists in the old bounding box 94, and crowd 100 exists in the new bounding box 96.

Since the old bounding box 94 and the new bounding box 96 overlap, the crowd analyzer 58 creates a bounding box 102 that encompasses both the old bounding box 94 and the new bounding box 96, as illustrated in FIG. 10B. In addition, the crowd analyzer 58 creates crowds 104 through 110 for individual users currently located within the bounding box 102. The optimal inclusion distances of the crowds 104 through 110 are set to the initial optimal inclusion distance computed by the crowd analyzer 58 based on the density of users in the bounding box 102.

Next, the crowd analyzer 58 analyzes the crowds 98, 100, and 104 through 110 to determine whether any members of the crowds 98, 100, and 104 through 110 violate the optimal inclusion distances of the crowds 98, 100, and 104 through 110. In this example, as a result of the user leaving the crowd 98 and moving to his new location, both of the remaining members of the crowd 98 violate the optimal inclusion distance of the crowd 98. As such, the crowd analyzer 58 removes the remaining users from the crowd 98 and creates crowds 112 and 114 of one user each for those users, as illustrated in FIG. 10C.

The crowd analyzer 58 then identifies the two closest crowds in the bounding box 102, which in this example are the crowds 108 and 110. Next, the crowd analyzer 58 computes a distance between the two crowds 108 and 110. In this example, the distance between the two crowds 108 and 110 is less than the initial optimal inclusion distance and, as such, the two crowds 108 and 110 are combined. In this example, crowds are combined by merging the smaller crowd into the larger crowd. Since the two crowds 108 and 110 are of the same size, the crowd analyzer 58 merges the crowd 110 into the crowd 108, as illustrated in FIG. 10D. A new crowd center and new optimal inclusion distance are then computed for the crowd 108.

At this point, the crowd analyzer 58 repeats the process and determines that the crowds 100 and 106 are now the two closest crowds. In this example, the distance between the two crowds 100 and 106 is less than the optimal inclusion distance of the larger of the two crowds 100 and 106, which is the crowd 100. As such, the crowd 106 is merged into the crowd 100 and a new crowd center and optimal inclusion distance are computed for the crowd 100, as illustrated in FIG. 10E. At this point, there are no two crowds closer than the optimal inclusion distance of the larger of the two crowds. As such, the crowd analyzer 58 discards any crowds having less than three members, as illustrated in FIG. 10F. In this example, the crowds 104, 108, 112, and 114 have less than three members and are therefore removed. The crowd 100 has three or more members and, as such, is not removed. At this point, the crowd formation process is complete.

FIGS. 11A through 11E graphically illustrate the crowd formation process of FIGS. 8A through 8D in a scenario where the new and old bounding boxes do not overlap. As illustrated in FIG. 11A, in this example, the user moves from an old location to a new location. The crowd analyzer 58 creates an old bounding box 116 for the old location of the user and a new bounding box 118 for the new location of the user. Crowds 120 and 122 exist in the old bounding box 116, and crowd 124 exists in the new bounding box 118. In this example, since the old and new bounding boxes 116 and 118 do not overlap, the crowd analyzer 58 processes the old and new bounding boxes 116 and 118 separately.

More specifically, as illustrated in FIG. 11B, as a result of the movement of the user from the old location to the new location, the remaining users in the crowd 120 no longer satisfy the optimal inclusion distance for the crowd 120. As such, the remaining users in the crowd 120 are removed from the crowd 120, and crowds 126 and 128 of one user each are created for the removed users as shown in FIG. 11C. In this example, no two crowds in the old bounding box 116 are close enough to be combined. As such, crowds having less than three users are removed, and processing of the old bounding box 116 is complete, and the crowd analyzer 58 proceeds to process the new bounding box 118.

As illustrated in FIG. 11D, processing of the new bounding box 118 begins by the crowd analyzer 58 creating a crowd 130 of one user for the user. The crowd analyzer 58 then identifies the crowds 124 and 130 as the two closest crowds in the new bounding box 118 and determines a distance between the two crowds 124 and 130. In this example, the distance between the two crowds 124 and 130 is less than the optimal inclusion distance of the larger crowd, which is the crowd 124. As such, the crowd analyzer 58 combines the crowds 124 and 130 by merging the crowd 130 into the crowd 124, as illustrated in FIG. 11E. A new crowd center and new optimal inclusion distance are then computed for the crowd 124. At this point, the crowd formation process is complete. Note that the crowd formation processes described above with respect to FIGS. 6 through 11D are exemplary. The present disclosure is not limited thereto. Any type of crowd formation process may be used.

FIG. 12 illustrates the operation of the system 10 to provide a GUI that represents a reference location and nearby crowds of users according to one embodiment of the present disclosure. Note that while in this example the request is initiated by the MAP application 32 of the mobile device 18, the present disclosure is not limited thereto. In a similar manner, requests may be received from the third-party application 34 of the mobile device 18 and/or from the subscriber device 22.

First, the MAP application 32 of the mobile device 18 sends a crowd request to the MAP server 12 via the MAP client 30 of the mobile device 18 (step 1400). The crowd request is a request for crowd data for crowds currently formed at or near a specified reference location. The crowd request may be initiated by the user 20 of the mobile device 18 via the MAP application 32 or may be initiated automatically by the MAP application 32 in response to an event such as, for example, start-up of the MAP application 32, movement of the user 20, or the like. The reference location specified by the crowd request may be the current location of the user 20, a POI selected by the user 20, a POI selected by the MAP application 32, a POI implicitly defined via a separate application (e.g., the POI is implicitly defined as the location of the nearest Starbucks coffee house in response to the user 20 performing a Google search for “Starbucks”), an arbitrary location selected by the user 20, or the like.

In response to receiving the crowd request, the MAP server 12 identifies one or more crowds relevant to the crowd request (step 1402). More specifically, in one embodiment, the crowd analyzer 58 performs a crowd formation process such as that described above in FIG. 6 to form one or more crowds relevant to the reference location specified by the crowd request. In another embodiment, the crowd analyzer 58 proactively forms crowds using a process such as that described above in FIGS. 8A through 8D and stores corresponding crowd records in the datastore 64 of the MAP server 12. Then, rather than forming the relevant crowds in response to the crowd request, the crowd analyzer 58 queries the datastore 64 to identify the crowds that are relevant to the crowd request. The crowds relevant to the crowd request may be those crowds within or intersecting a bounding region, such as a bounding box, for the crowd request. The bounding region is a geographic region of a predefined shape and size centered at the reference location. A crowd may be determined to be within or intersecting the bounding region if, for example, a crowd center of the crowd is located within the bounding region, at least one user in the crowd is currently located within the bounding region, a bounding box for the crowd (e.g., a box passing through the northwest- and southeast-most users in the crowd) is within or intersects the bounding region, or the like.

Once the crowd analyzer 58 has identified the crowds relevant to the crowd request, the MAP server 12 obtains crowd data for the relevant crowds (step 1404). The crowd data for the relevant crowds includes spatial information that defines the locations of the relevant crowds. The spatial information that defines the location of a crowd is any type of information that defines the geographic location of the crowd. For example, the spatial information may include the crowd center of the crowd, a closest street address to the crowd center of the crowd, a POI at which the crowd is located, or the like. In addition, the crowd data for the relevant crowds may include aggregate profiles for the relevant crowds, information characterizing the relevant crowds, or both. An aggregate profile for a crowd is generally an aggregation, or combination, of the user profiles of the users 20 in the crowd. For example, in one embodiment, the aggregate profile of a crowd includes, for each keyword of at least a subset of the keywords in the user profile of the user 20 of the mobile device 18 that issued the crowd request, a number of user matches for the keyword (i.e., a number of the users 20 in the crowd that have user profiles that include a matching keyword) or a ratio of the number of user matches for the keyword to a total number of users in the crowd. The MAP server 12 then returns the crowd data to the mobile device 18 (step 1406).

Upon receiving the crowd data, the MAP application 32 of the mobile device 18 assigns each of the relevant crowds to one of a number of concentric geographic regions centered at the reference location (step 1408). More specifically, for each of the relevant crowds, the MAP application 32 assigns the relevant crowd to the one of the concentric geographic regions in which the crowd is located. In one embodiment, the concentric geographic regions are two or more concentric circular geographic regions that are centered at the reference location. The size of the concentric geographic regions (e.g., the radii of the concentric circular geographic regions) may be predefined static values or dynamic values. For instance, the size of the concentric geographic regions may be a function of the size of the bounding region for the crowd request, where the bounding region for the crowd request may be configured by the user 20 of the mobile device 18. As another example, the size of the concentric geographic regions may be a function of the number of concentric geographic regions (e.g., two concentric geographic regions versus three concentric geographic regions), which may be specified by the user 20 at the time of the crowd request or dynamically controlled by the user 20 during presentation of the GUI (see below).

Next, the MAP application 32 generates and presents a GUI that includes a number of concentric display regions that correspond to the concentric geographic regions, where a select one of the concentric display regions provides an expanded view of the relevant crowds located within the corresponding geographic region and the remaining one(s) of the concentric display regions provide collapsed view(s) of the relevant crowds in the corresponding geographic region(s) (step 1410). In one preferred embodiment, in the selected display region, the expanded view is provided by displaying crowd representations in the selected display region that represent the relevant crowds in the corresponding geographic region, where the crowd representations represent, or at least substantially represent, both relative distances within the corresponding geographic region between the reference location and the corresponding crowds and relative bearings within the corresponding geographic region from the reference location to the corresponding crowds. In contrast, for each non-selected display region, the collapsed view is provided by displaying crowd representations in the non-selected display region that represent the relevant crowds in the corresponding geographic region, where the crowd representations represent the relative bearings within the corresponding geographic region from the reference location to the corresponding crowds. However, the crowd representations in the non-selected display region do not represent the relative distances within the corresponding geographic region between the reference location and the corresponding crowds. In other words, even though the actual distances between the crowds represented by the crowd representations in the non-selected display region and the reference location may be different, in the collapsed view, the crowd representations are equidistant, or at least substantially equidistant, from a point in the GUI that corresponds to the reference location. In one exemplary alternative, the crowd representations in the non-selected display region may represent relative distances of the corresponding crowds from reference location but in an attenuated manner such that the crowd representations fit within the non-selected display area.

In this embodiment, the MAP application 32 next receives user input from the user 20 of the mobile device 18 that selects a different display region from the concentric display regions (step 1412). In response, the MAP application 32 updates the GUI (step 1414). More specifically, the MAP application 32 updates the GUI such that the newly selected display region provides an expanded view of the crowds located in the corresponding geographic region. The previously selected display region is also updated to provide a collapsed view of the crowds located in the corresponding geographic region. As such, in this embodiment, at any one time, only one of the display regions is selected to provide an expanded view of the relevant crowds located in the corresponding geographic region while all of the remaining display regions provide collapsed view(s) of the relevant crowds located in the corresponding geographic region(s).

FIGS. 13A through 13C illustrate an exemplary GUI 132 provided by the MAP application 32 in the process of FIG. 12 according to one embodiment of the present disclosure. As illustrated in FIG. 13A, the GUI 132 includes three concentric display regions 134, 136, and 138 centered at the reference location, which is represented by a reference location indicator 140. The three concentric display regions 134, 136, and 138 correspond to three concentric geographic regions. In FIG. 13A, the display region 134 is selected. In this example, the display region 134 corresponds to a geographic region that is within walking distance from the reference location (e.g., has a radius of 1 mile). Because the display region 134 is selected, the display region 134 provides an expanded view of the relevant crowds located within the corresponding geographic region. More specifically, the relevant crowds located within the geographic region corresponding to the display region 134 are represented by crowd representations 142 through 158. In the expanded view, the crowd representations 142 through 158 represent, or at least substantially represent, both relative distances within the corresponding geographic region between the reference location and the corresponding crowds and relative bearings within the corresponding geographic region from the reference location to the corresponding crowds.

In contrast, because the display regions 136 and 138 are not selected, the display regions 136 and 138 provide collapsed views of the relevant crowds in the corresponding geographic regions. More specifically, in this example, the relevant crowds located within the geographic region corresponding to the display region 136 are represented by crowd representations 160 and 162. In the collapsed view, the crowd representations 160 and 162 represent the relative bearings within the corresponding geographic region from the reference location to the corresponding crowds. However, the crowd representations 160 and 162 do not represent the relative distances within the corresponding geographic region between the reference location and the corresponding crowds. In other words, even though the actual distances between the crowds represented by the crowd representations 160 and 162 and the reference location may be different, in the collapsed view, the crowd representations 160 and 162 are equidistant, or at least substantially equidistant, from the reference location indicator 140.

Likewise, in this example, the relevant crowds located within the geographic region corresponding to the display region 138 are represented by crowd representations 164 and 166. In the collapsed view, the crowd representations 164 and 166 represent the relative bearings within the corresponding geographic region from the reference location and the corresponding crowds. However, the crowd representations 164 and 166 do not represent the relative distances within the corresponding geographic region between the reference location and the corresponding crowds. In other words, even though the actual distances between the crowds represented by the crowd representations 164 and 166 and the reference location may be different, in the collapsed view, the crowd representations 164 and 166 are equidistant, or at least substantially equidistant, from the reference location indicator 140.

FIG. 13B illustrates the GUI 132 when the display region 136 is selected according to one embodiment of the present disclosure. In this example, the display region 136 corresponds to a geographic region that is within bicycling distance from the reference location (e.g., has a radius of 2 miles). Because the display region 136 is selected, the display region 136 provides an expanded view of the relevant crowds located within the corresponding geographic region. More specifically, in the expanded view, the crowd representations 160 and 162 represent, or at least substantially represent, both relative distances within the corresponding geographic region between the reference location and the corresponding crowds and relative bearings within the corresponding geographic region from the reference location and the corresponding crowds. In other words, whereas in FIG. 13A the crowd representations 160 and 162 are equidistant, or at least substantially equidistant, from the reference location indicator 140, the crowd representations 160 and 162 in FIG. 13B reflect the differing distances between the corresponding crowds and the reference location.

In contrast, because the display regions 134 and 138 are not selected, the display regions 134 and 138 provide collapsed views of the relevant crowds in the corresponding geographic regions. More specifically, in the collapsed view, the crowd representations 142 through 158 represent the relative bearings within the corresponding geographic region from the reference location and the corresponding crowds. However, the crowd representations 142 through 158 do not represent the relative distances within the corresponding geographic region between the reference location and the corresponding crowds. In other words, even though the actual distances between the crowds represented by the crowd representations 142 through 158 and the reference location may be different, in the collapsed view, the crowd representations 142 through 158 are equidistant, or at least substantially equidistant, from the reference location indicator 140.

Likewise, in the collapsed view, the crowd representations 164 and 166 represent the relative bearings within the corresponding geographic region from the reference location and the corresponding crowds. However, the crowd representations 164 and 166 do not represent the relative distances within the corresponding geographic region between the reference location and the corresponding crowds. In other words, even though the actual distances between the crowds represented by the crowd representations 164 and 166 and the reference location may be different, in the collapsed view, the crowd representations 164 and 166 are equidistant, or at least substantially equidistant, from the reference location indicator 140.

FIG. 13C is a blow-up view of the crowd representations 142 through 158 from FIG. 13A that illustrates placement of the crowd representations 142 through 158 using a collision avoidance scheme according to one embodiment of the present disclosure. In this example, the relevant crowds represented by the crowd representations 142 through 158 are determined to be sufficiently close to one another to result in a collision in terms of display of corresponding crowd representations in the GUI 132. As a result, a collision avoidance process is utilized to group the crowd representations 142 through 158 in a manner that avoids collision of the crowd representations 142 through 158. In this example, the collision avoidance process places a group center indicator 168 at a central point for the group of crowds. In one example, the group center indicator 168 corresponds to a location computed based on the locations of the crowds and a center of mass algorithm. The crowd representations 142 through 158 are then positioned around the group center indicator 168 in an outward spiral pattern that maximizes the number of crowd representations that can be displayed while still allowing interactivity with as many of the crowd representations as possible. The order of the crowd representations 142 through 158 in the spiral pattern may be random, arbitrary, or intelligently decided based on the locations of the corresponding crowds.

It should be noted that other collision avoidance schemes may additionally or alternatively be used. As a first example, a z-order of the crowd representations 142 through 158 can be controlled based on attributes of the corresponding crowds such as, for example, the locations of the crowds. As a second example, the distances of the crowd representations 142 through 158 from the group center may be scaled to a non-linear scale in order to provide more space for displaying and interacting with the crowd representations 142 through 158. As a final example, as the user 20 interacts with the GUI 132 to attempt to select one of the crowd representations 142 through 158, which crowd representation of the crowd representations 142 through 158 that is selected may be intelligently controlled to assist the user 20 in selecting a desired crowd representation if the user 20 repeatedly tries to select a desired crowd representation at a particular location within the GUI 132.

It should also be noted that the positions of the crowd representations 142 through 166 within the GUI 132 may be adjusted based upon empty space within the GUI 132 or a more uniform division of the display area in order to make better use of the display area. Also, in addition to or as an alternative to grouping crowd representations when there is a collision, crowd representations may be grouped based on their relations to one another. For example, crowd representations for two crowds may be grouped if a user in one of the crowds is a friend of one of the users in the other crowd, if the two crowds are at the same POI, or if the two crowds are at two POIs within the same AOI.

FIG. 14 illustrates the operation of the system of FIG. 1 to provide a GUI that represents crowds near a reference location according to another embodiment of the present disclosure. In this embodiment, rather than generating the GUI at the mobile device 18, the GUI is generated at the MAP server 12. In this example, the crowd request originates from the subscriber device 22.

More specifically, first, the subscriber device 22 sends a crowd request to the MAP server 12 (step 1500). In one embodiment, the crowd request is sent via the web browser 38 of the subscriber device 22. As discussed above, the crowd request is a request for crowd data for crowds currently formed at or near a specified reference location. The reference location in this embodiment is preferably a location selected by the subscriber 24. However, the reference location is not limited thereto.

In response to receiving the crowd request, the MAP server 12 identifies one or more crowds relevant to the crowd request (step 1502) and obtains crowd data for the relevant crowds (step 1504). Again, the crowd data for the relevant crowds includes spatial information that defines the locations of the crowds. In addition, the crowd data may include aggregate profiles for the crowds, information characterizing the crowds, or both.

Next, the crowd analyzer 58 of the MAP server 12 assigns each of the relevant crowds to one of a number of concentric geographic regions centered at the reference location (step 1506). More specifically, for each of the relevant crowds, the MAP application 32 assigns the relevant crowd to the one of the concentric geographic regions in which the crowd is located. The crowd analyzer 58 then generates a GUI that includes a number of concentric display regions that correspond to the concentric geographic regions, where a select one of the concentric display regions provides an expanded view of the relevant crowds located within the corresponding geographic region and the remaining one(s) of the concentric display regions provide collapsed view(s) of the relevant crowds in the corresponding geographic region(s) (step 1508). The MAP server 12 then delivers the GUI to the subscriber device 22 (step 1510), where the GUI is presented to the subscriber 24 via, for example, the web browser 38 (step 1512).

In this embodiment, the subscriber device 22 next receives user input from the subscriber 24 that selects a different display region from the concentric display regions (step 1514) and provides the selection to the MAP server (step 1516). In response, the MAP server 12 updates the GUI (step 1518) and delivers the updated GUI to the subscriber device 22 (step 1520). The subscriber device 22 then presents the updated GUI to the subscriber 24 via, for example, the web browser 38 (step 1522).

FIG. 15 is a block diagram of the MAP server 12 according to one embodiment of the present disclosure. As illustrated, the MAP server 12 includes a controller 170 connected to memory 172, one or more secondary storage devices 174, and a communication interface 176 by a bus 178 or similar mechanism. The controller 170 is a microprocessor, digital Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA), or similar hardware component. In this embodiment, the controller 170 is a microprocessor, and the application layer 40, the business logic layer 42, and the object mapping layer 62 (FIG. 2) are implemented in software and stored in the memory 172 for execution by the controller 170. Further, the datastore 64 (FIG. 2) may be implemented in the one or more secondary storage devices 174. The secondary storage devices 174 are digital data storage devices such as, for example, one or more hard disk drives. The communication interface 176 is a wired or wireless communication interface that communicatively couples the MAP server 12 to the network 28 (FIG. 1). For example, the communication interface 176 may be an Ethernet interface, local wireless interface such as a wireless interface operating according to one of the suite of IEEE 802.11 standards, or the like.

FIG. 16 is a block diagram of one of the mobile devices 18 according to one embodiment of the present disclosure. As illustrated, the mobile device 18 includes a controller 180 connected to memory 182, a communication interface 184, one or more user interface components 186, and the location function 36 by a bus 188 or similar mechanism. The controller 180 is a microprocessor, digital ASIC, FPGA, or similar hardware component. In this embodiment, the controller 180 is a microprocessor, and the MAP client 30, the MAP application 32, and the third-party applications 34 are implemented in software and stored in the memory 182 for execution by the controller 180. In this embodiment, the location function 36 is a hardware component such as, for example, a GPS receiver. The communication interface 184 is a wireless communication interface that communicatively couples the mobile device 18 to the network 28 (FIG. 1). For example, the communication interface 184 may be a local wireless interface such as a wireless interface operating according to one of the suite of IEEE 802.11 standards, a mobile communications interface such as a cellular telecommunications interface, or the like. The one or more user interface components 186 include, for example, a touchscreen, a display, one or more user input components (e.g., a keypad), a speaker, or the like, or any combination thereof.

FIG. 17 is a block diagram of the subscriber device 22 according to one embodiment of the present disclosure. As illustrated, the subscriber device 22 includes a controller 190 connected to memory 192, one or more secondary storage devices 194, a communication interface 196, and one or more user interface components 198 by a bus 200 or similar mechanism. The controller 190 is a microprocessor, digital ASIC, FPGA, or similar hardware component. In this embodiment, the controller 190 is a microprocessor, and the web browser 38 (FIG. 1) is implemented in software and stored in the memory 192 for execution by the controller 190. The one or more secondary storage devices 194 are digital storage devices such as, for example, one or more hard disk drives. The communication interface 196 is a wired or wireless communication interface that communicatively couples the subscriber device 22 to the network 28 (FIG. 1). For example, the communication interface 196 may be an Ethernet interface, local wireless interface such as a wireless interface operating according to one of the suite of IEEE 802.11 standards, a mobile communications interface such as a cellular telecommunications interface, or the like. The one or more user interface components 198 include, for example, a touchscreen, a display, one or more user input components (e.g., a keypad), a speaker, or the like, or any combination thereof.

FIG. 18 illustrates a more general process for generating and presenting a GUI that represents a reference item and a number of items of interest according to one embodiment of the present disclosure. This process may be performed by a user device (e.g., a mobile device similar to the mobile devices 18), a server computer, or a combination thereof. First, a reference item is identified (step 1600). The reference item is generally any item having one or more attributes that may be used to represent the reference item in, or map the reference item into, two-dimensional space. For example, the reference item may be a person, POI, or location that can be represented in two-dimensional geographic space (e.g., via corresponding latitude and longitude coordinates, street addresses, or the like). However, the reference item is not limited to items that can be represented in two-dimensional geographic space. The reference item may be other types of items such as, for example, a computer (either ideal or real) that can be represented in two-dimensional space based on one or more specifications (i.e., attributes) of the computer. For instance, a computer may be mapped to a two-dimensional space based on processing power and memory attributes of the computer (e.g., processing power may be represented by the X-axis in two-dimensional space and memory capacity may be represented by the Y-axis in two-dimensional space).

Next, a number of items of interest are identified (step 1602). The items of interest are generally other items having the same attributes as the reference item. For example, if the reference item is an ideal computer, the items of interest may be real computers that are commercially available. Each of the items of interest is then assigned to one of a number of concentric regions in the two-dimensional space centered at the location of the reference item in the two-dimensional space based on the attributes of the item of interest (step 1604). Note that the attribute(s) of the item of interest represents the location of the item of interest in the two-dimensional space. As such, the item of interest is assigned to the concentric region in the two-dimensional space in which the item of interest is located as determined by the attribute(s) of the item of interest. Also note that if more than two attributes of the reference item and the items of interest are to be compared, the reference item and the items of interest may be mapped to the two-dimensional space using an appropriate mapping scheme.

A GUI that represents the reference item and the items of interest is then generated such that the GUI includes concentric display regions that correspond to the concentric regions within the two-dimensional space, where a select one of the concentric display regions provides an expanded view of the items of interest located within the corresponding region in the two-dimensional space and the remaining ones of the concentric display region(s) provide collapsed view(s) of the items of interest located within the corresponding region(s) in the two-dimensional space (step 1606). The GUI is then presented to a user (step 1608). User input may then be received from the user to select a different one of the concentric display regions (step 1610). In response, the GUI is updated such that the newly selected display region provides an expanded view of the items of interest in the corresponding region of the two-dimensional space while the other one(s) of the concentric display regions provide collapsed view(s) of the items of interest located in the corresponding region(s) of the two-dimensional space (step 1612). The updated GUI is then presented to the user (step 1614).

While the discussion above mentions an example where the reference item is a reference computer and the items of interest are other computers to be compared to the reference computer, numerous other examples will be apparent to one of ordinary skill in the art upon reading this disclosure. As a first example, as discussed above with respect to FIG. 12, the reference item may be a reference location, and the items of interest may be crowds of users. As a second example, the reference item may be a reference location, and the items of interest may be POIs. As a third example, the reference item may be a user, and the items of interest may be friends, or at least a subset of the friends, of the user in a social network. In this example, the attributes of the user and his friends represented in the GUI may be the locations of the user and his friends. As a fourth example, the reference item may be a user, and the items of interest may be friends and friends-of-friends of the user in a social network. In this example, the attributes of the user and his friends and friends-of-friends represented in the GUI may be the locations of the user and his friends and friends-of-friends. Alternatively, the attributes of the user and his friends and friends-of-friends represented in the GUI may be social network distance (i.e., degree of separation) between the user and his friends and friends-of-friends and degree of similarity between the user profiles of the user and his friends and friends-of-friends. Note that these examples are provided for illustrative purposes only and are not intended to provide an exhaustive list of the types of items that may be represented in the GUI disclosed herein. Numerous other examples will be apparent to one of ordinary skill in the art upon reading this disclosure and are to be considered within the scope of the present disclosure.

Those skilled in the art will recognize improvements and modifications to the preferred embodiments of the present disclosure. All such improvements and modifications are considered within the scope of the concepts disclosed herein and the claims that follow. 

What is claimed is:
 1. A computing device comprising: a communication interface that operatively couples the computing device to a network; a memory; and a controller associated with the communication interface and memory and configured to: assign each item of interest of a plurality of items of interest to one of a plurality of concentric regions in a two-dimensional geographic space based on a location of the item of interest in the two-dimensional geographic space, wherein the location of the item of interest is determined based on one or more attributes of the item of interest, the plurality of concentric regions are centered at a location of a reference item in the two-dimensional geographic space, and the location of the reference item is determined based on one or more attributes of the reference item that correspond to the one or more attributes of the item of interest; generate a Graphical User Interface (GUI) that represents the reference item and the plurality of items of interest in the two-dimensional geographic space such that the GUI includes a plurality of concentric display regions that correspond to the plurality of concentric regions in the two-dimensional geographic space, a select one of the plurality of concentric display regions provides an expanded view of one or more of the plurality of items of interest located in a corresponding one of the plurality of concentric regions in the two-dimensional geographic space, and each remaining one of the plurality of concentric display regions provides a collapsed view of one or more of the plurality of items of interest located in a corresponding one of the plurality of concentric regions in the two-dimensional geographic space; wherein changing a concentric display region from an expanded view to a collapsed view changes a location of an item of interest in the changed concentric display region to a location unrelated to the relative distance of the item of interest from the reference item while maintaining substantially a same bearing relative to the location of the reference item as the item of interest would be shown at in the expanded view; and effect presentation of the GUI.
 2. The computing device of claim 1 wherein the plurality of concentric display regions are centered on an indicator that represents the location of the reference item in the two-dimensional geographic space.
 3. The computing device of claim 2 wherein, in order to provide the expanded view, the select one of the plurality of concentric display regions comprises one or more item representations that represent: relative distances within the corresponding one of the plurality of concentric regions in the two-dimensional geographic space between the locations of the one or more of the plurality of items of interest in the corresponding one of the plurality of concentric regions in the two-dimensional geographic space and the location of the reference item in the two-dimensional geographic space; and bearings within the two-dimensional geographic space from the location of the reference item in the two-dimensional geographic space to the locations of the one or more of the plurality of items of interest in the corresponding one of the plurality of concentric regions in the two-dimensional geographic space.
 4. The computing device of claim 3 wherein in providing the GUI, the controller is configured to perform a collision avoidance process by which item representations of two or more of the plurality of items of interest in the one of the plurality of concentric regions in the two-dimensional geographic space that corresponds to the select one of the plurality of concentric display regions are positioned in such a manner as to at least substantially avoid collision of the item representations in the GUI.
 5. The computing device of claim 2 wherein, in order to provide the collapsed view for each remaining one of the plurality of concentric display regions, the remaining one of the plurality of concentric display regions comprises one or more item representations that are at least substantially equidistant from the indicator that represents the location of the reference item in the two-dimensional geographic space.
 6. The computing device of claim 5 wherein the one or more item representations represent bearings within the two-dimensional geographic space from the location of the reference item in the two-dimensional geographic space to the locations of the one or more of the plurality of items of interest in the corresponding one of the plurality of concentric regions in the two-dimensional geographic space.
 7. The computing device of claim Error! Reference source not found. wherein the reference item is a reference location and the plurality of items of interest comprise a plurality of crowds of users.
 8. The computing device of claim 7 wherein: the plurality of concentric display regions in the two-dimensional geographic space is a plurality of concentric geographic regions in the two-dimensional geographic space centered at the reference location; in assigning each item of interest of the plurality of items of interest to one of the plurality of concentric regions in the two-dimensional geographic space, the controller is configured to assign each crowd of the plurality of crowds to one of the plurality of concentric geographic regions based on spatial information that defines a location of the crowd; and in generating the GUI, the controller is configured to generate the GUI such that the plurality of concentric display regions correspond to the plurality of concentric geographic regions, the select one of the plurality of concentric display regions provides the expanded view of one or more of the plurality of crowds located within a corresponding one of the plurality of concentric geographic regions, and each remaining one of the plurality of concentric display regions provides a collapsed view of one or more of the plurality of crowds located within a corresponding one of the plurality of concentric geographic regions.
 9. The computing device of claim 1 wherein the reference item is a reference location and the plurality of items of interest comprise a plurality of Points of Interest (POIs).
 10. The computing device of claim 1 wherein the reference item is a reference location, the plurality of items of interest comprise a plurality of mobile devices that are associated with friends of the user of the computing device in a social network.
 11. The computing device of claim 1 wherein the reference item is a reference location and the plurality of items of interest comprise a plurality of mobile devices that are associated with friends and friends-of-friends of the user of the computing device in a social network.
 12. The computing device of claim 1 wherein the plurality of items of interest comprise a plurality of commercially available items.
 13. The computing device of claim 1 wherein effecting presentation of the GUI comprises displaying the GUI on the computing device.
 14. The computing device of claim 1 wherein effecting presentation of the GUI comprises sending the GUI to the computing device via the network.
 15. The computing device of claim 1 wherein the computing device is a mobile device further comprising a display associated with the controller, and the controller is adapted to effect presentation of the GUI by presenting the GUI via the display.
 16. The computing device of claim 15 wherein the computing device is a server computer further comprising a communication interface adapted to communicatively couple the server computer to a mobile device via the network, and the controller of the server computer is adapted to effect presentation of the GUI by sending the GUI to the mobile device via the network. 